Assuming that you have more than one product style listed in your table, $some_value would be the specific product style you want to display. Let's say you have 3 different product styles (example1, example2, and example3) and you want to display the product style of example2.

You can pull other information as well related to that item. Price, description, etc.
It may be worth for it for you to check out a tutorial that will break it down for you step by step and you can try a few things out for yourself.http://www.w3schools.com/php/default.asp